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Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof

A technology of ether amino alkyl glycoside drilling and polyether amino alkyl glycoside, which is applied in the field of soil-free polyether amino alkyl glycoside drilling fluid and its preparation, can solve the problems of poor suppression performance and reservoir protection, etc. Achieve the effects of good suppression performance, good suppression performance and good reservoir protection

Inactive Publication Date: 2017-05-24
SINOPEC SSC +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The water-based drilling fluid provided by the prior art can stabilize mudstone and shale to a certain extent, improve the integrity of cuttings, increase the drilling speed, reduce the torque and resistance of downhole drilling tools, and reduce the back pressure problem in sliding drilling However, this water-based nano-drilling fluid has poor suppression performance and reservoir protection, and cannot effectively solve the problem of wellbore instability in easily collapsed formations such as strong water-sensitive shale and mudstone

Method used

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  • Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof
  • Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof
  • Soilless polyether amine alkyl glucoside drilling fluid and preparation method thereof

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preparation example Construction

[0080] The present invention provides a kind of preparation method of soil-free polyether amino alkyl glycoside drilling fluid described in the above technical scheme, comprising:

[0081] Mix polyether amino alkyl glycoside, viscosifier, fluid loss reducer, plugging agent, pH regulator, carbonate, sodium chloride, sulfur-containing antioxidant and water, and then perform aging treatment to obtain no Earth phase polyether amino alkyl glycoside drilling fluid.

[0082] In the present invention, the types of polyether amino alkyl glycosides, viscosifiers, fluid loss control agents, plugging agents, pH regulators, carbonates, sodium chloride, sulfur-containing antioxidants and water , source and dosage are the same as polyetheramino alkyl glycosides, viscosifiers, fluid loss reducers, plugging agents, pH regulators, carbonates, sodium chloride, sulfur-containing antioxidants and The type, source and amount of water are the same, and will not be repeated here.

[0083] In an emb...

Embodiment 1

[0110] Add 44.05g of ethylene oxide, 97g of methyl glucoside, 72g of distilled water and 1.72g of p-toluenesulfonic acid into a high-pressure reactor equipped with a thermometer, a condenser, and a stirrer, and react at 3MPa and 50°C for 0.5 hour, the intermediate product was obtained;

[0111] Neutralize the intermediate product with the neutralizing agent NaOH to a pH value of 6, add 24g of ethylenediamine, react at a temperature of 40°C under normal pressure for 3 hours, remove water from the obtained reaction product to obtain polyetheramine methyl glucoside.

[0112] The polyetheraminomethyl glucoside prepared in Example 1 of the present invention was carried out infrared detection, and the detection results were as follows: figure 1 as shown, figure 1 For the infrared spectrogram of the polyether aminomethyl glycoside prepared in Example 1 of the present invention, by figure 1 It can be seen that the polyether aminomethyl glycoside prepared in Example 1 of the present...

Embodiment 2

[0116] Add 44.05g of ethylene oxide, 104g of ethyl glucoside, 90g of distilled water and 1.96g of sulfuric acid into a high-pressure reactor equipped with a thermometer, condenser, and stirrer, and react at 4MPa and 60°C for 1 hour to obtain mid product;

[0117] The intermediate product was neutralized with a neutralizing agent NaOH to a pH value of 6, 51.59 g of diethylenetriamine was added, and the temperature was 50° C. under normal pressure to react for 4 hours, and the obtained reaction product was dehydrated to obtain a poly Etheraminoethyl Glycoside.

[0118] The polyetheraminoethyl glycoside prepared in Example 2 of the present invention was subjected to infrared detection, and the detection result was that the polyetheraminoethyl glycoside prepared in Example 2 of the present invention had a structure shown in formula 2:

[0119]

[0120] In formula 2, m is 0-3, and o is 1.

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Abstract

The invention provides a soilless polyether amine alkyl glucoside drilling fluid including 2 wt%-7 wt% of polyether amine alkyl glycoside, 0.4 wt%-1.2 wt% of a tackifier, 2.6 wt%-8 wt% of a filtrate loss reducer, 1 wt%-4 wt% of a plugging agent, 0.6 wt%-1 wt% of a pH regulator, 0.1 wt%-0.4 wt% of carbonate, 10 wt%-24 wt% of sodium chloride, 0.2 wt%-0.6 wt% of a sulfur-containing antioxidant, and the balance water. The polyether amine alkyl glucoside has good inhibition, lubricity, temperature resistance and reservoir protection, and through intercoordination of the polyether amine alkyl glycoside with other components, the drilling fluid has good inhibition, temperature resistance, lubricity, fouling resistance and reservoir protection. The invention also provides a preparation method of the soilless polyether amine alkyl glucoside drilling fluid.

Description

technical field [0001] The invention relates to the technical field of petroleum drilling, in particular to an earth-free polyether amino alkyl glycoside drilling fluid and a preparation method thereof. Background technique [0002] Drilling fluid is the circulating flushing medium used in the drilling process, and it is the blood of drilling, also known as drilling flushing fluid. Drilling fluid can be divided into clear water, mud, clay-free flushing fluid, emulsion, foam and compressed air according to its composition. Clear water is the earliest drilling fluid, which requires no treatment and is easy to use. It is suitable for complete rock formations and areas with sufficient water sources ; Mud is a widely used drilling fluid, which is mainly suitable for unstable rock formations with loose walls, developed cracks, easy to collapse and drop blocks, swelling and spalling when encountering water. Drilling fluid plays an important role in drilling operations and protecti...

Claims

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Application Information

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IPC IPC(8): C09K8/12C09K8/035
Inventor 司西强王中华魏军高小芃谢俊吕跃滨赵虎雷祖猛
Owner SINOPEC SSC
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